Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Apixaban Versus Warfarin for Left Ventricular Thrombus (APEX)

9. juli 2026 opdateret af: Tushar Acharya, University of Arizona

Apixaban vs. Warfarin in Left Ventricular Thrombus: A Randomized, Noninferiority Trial

Left ventricular thrombus is a blood clot that forms in the left ventricle and is associated with risk of systemic embolism and ischemic stroke. Warfarin has historically been used for anticoagulation in this condition, but it requires frequent international normalized ratio monitoring and is affected by dietary and drug interactions. Apixaban is a direct oral factor Xa inhibitor with fixed dosing and no routine anticoagulation monitoring requirement, and it is increasingly used in clinical practice for left ventricular thrombus, although definitive randomized evidence remains limited.

This randomized, noninferiority trial will compare apixaban with warfarin for treatment of left ventricular thrombus. Eligible adults with recently confirmed left ventricular thrombus will be randomized 1:1 to apixaban or warfarin. The primary endpoint is complete left ventricular thrombus resolution at 3 months assessed by cardiac magnetic resonance imaging. Participants will be followed through 12 months for thrombus-related, bleeding, cardiovascular, and mortality outcomes.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

218

Fase

  • Fase 3

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiesteder

  • Forenede Stater
    • Arizona
      • Tucson, Arizona, Forenede Stater, 85724
        • Rekruttering
        • Banner University Medical Center - Tucson
        • Ledende efterforsker:
          • Tushar Acharya, MD, MPH
        • Ledende efterforsker:
          • Song Peng Ang, MD
        • Ledende efterforsker:
          • Alane Blythe C Dy, PhD, MSPH

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Age ≥18 years
  • LV thrombus confirmed within 14 days prior to randomization by CMR or contrast TTE or cardiac CT; baseline CMR required pre-randomization (or ≤7 days post-randomization if clinically unavoidable)
  • Candidate for oral anticoagulation for ≥3 months
  • Able to provide informed consent.

Exclusion Criteria:

  • Absolute indication for VKA (mechanical valve, moderate-severe rheumatic MS and antiphospholipid syndrome) or clear preference or contraindication for one of the study drugs precluding randomization (see below)
  • Antiphospholipid syndrome
  • Estimated CrCl <15 mL/min or dialysis
  • Severe hepatic impairment (ICD-10: K70.40, K70.41, K71.10, K71.11, K72.00, K72.01, K72.10, K72.11, K72.90, K72.91)
  • Active clinically significant bleeding
  • Platelets <50,000/µL
  • Pregnancy or lactation; women of childbearing potential unwilling to use contraception
  • Life expectancy <1 year or other conditions compromising follow-up

Additional contraindications to use of warfarin or apixaban. This includes, but is not limited to:

  • Active pathological bleeding, major bleeding diathesis, or known blood dyscrasia
  • Recent or planned surgery involving the central nervous system or eye, traumatic surgery with large open surfaces, or procedures (spinal/epidural puncture or major regional block anesthesia) where bleeding cannot be safely controlled.
  • Conditions associated with high risk of bleeding such as threatened abortion, eclampsia, severe preeclampsia, or malignant/uncontrolled hypertension.
  • History of severe hypersensitivity or allergy to warfarin or apixaban.
  • Ongoing treatment with a combined P-gp and strong CYP3A4 inhibitor or inducer that cannot be safely discontinued or substituted. Examples include strong combined inhibitors such as ketoconazole, itraconazole, ritonavir or posiconazole, and strong combined inducers such as rifampin, carbamazepine, phenytoin, and St. John's wort.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Apixaban
Participants randomized to apixaban will receive oral apixaban for treatment of left ventricular thrombus according to standard clinical dosing and follow-up.
Medicin: Apixaban
Apixaban 5 mg orally twice daily
Aktiv komparator: Warfarin
Participants randomized to warfarin will receive oral dose-adjusted warfarin for treatment of left ventricular thrombus according to standard clinical care.
Medicin: Warfarin
Warfarin will be prescribed with dose adjustment to maintain INR 2.0-3.0.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Complete Left Ventricular Thrombus Resolution at 3 Months
Tidsramme: 3 months after randomization
Proportion of participants with complete resolution of left ventricular thrombus at 3 months, assessed by cardiac magnetic resonance imaging. The primary noninferiority comparison will use the absolute between-group difference in the proportion of participants with complete thrombus resolution, apixaban minus warfarin.
3 months after randomization

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Major Bleeding
Tidsramme: 6 months
Proportion of participants with major bleeding defined as BARC type 3 or 5 bleeding.
6 months
Change in LV Thrombus Volume
Tidsramme: Baseline to 3, 6, or 12 months
Change in thrombus volume assessed by CMR
Baseline to 3, 6, or 12 months
Left Ventricular Remodeling
Tidsramme: Baseline to 3, 6,12 months
Change in left ventricular ejection fraction and left ventricular volumes on follow-up imaging.
Baseline to 3, 6,12 months
Recurrent LV Thrombus
Tidsramme: 12 months
Proportion of participants with recurrent LV thrombus after documented resolution.
12 months
Ischemic Stroke
Tidsramme: 12 months
Proportion of participants with ischemic stroke.
12 months
Systemic embolism
Tidsramme: 12 months
Proportion of participants with systemic embolism
12 months
Cardiovascular Mortality
Tidsramme: 12 months
Proportion of participants with cardiovascular death.
12 months
All-Cause Mortality
Tidsramme: 12 months
Proportion of participants with death from any cause.
12 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Arizona

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

22. juni 2026

Primær færdiggørelse (Anslået)

1. juli 2028

Studieafslutning (Anslået)

1. juli 2029

Datoer for studieregistrering

Først indsendt

9. juli 2026

Først indsendt, der opfyldte QC-kriterier

9. juli 2026

Først opslået (Faktiske)

17. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

17. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

9. juli 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • STUDY00007421

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ja

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

produkt fremstillet i og eksporteret fra U.S.A.

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Venstre ventrikulær trombe

Kliniske forsøg med Apixaban

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Morocco

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

3
Abonner